D4 string and sequence

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String Review:
But is not the real meaning of the modifications. The old string is still
required to cover

2. rewrite:

1. Capitalized capitalize ()

2. The entire string to lowercase: casefold ()

3. play the string, and padded with spaces to the width of the new string length Center (width)
the minimum width is 20, about the three grid. Each plus (10), plus the left and right of each space 5.

4. Return the number of sub appear in the string, start and end parameters indicates a range, optional. COUNT (sub [, Start [, End]])

5. The string is checked whether the sub substring end, a return True, otherwise return False. parameter indicates the start and end range, optional. endsWith (Sub [, Start [, End]])
6. The tab character in the string (\ t) are converted to spaces, if not specified, the default is the number of spaces. 8 = TabSize.
expandtabs ([TabSize =. 8] )

7. The

Find (Sub [, Start [, End]])